In 2012-13, we commissioned an independent review of our 26 referable dams, which found improvements are needed at a number of our dams to meet the Queensland dam safety guidelines into the future.

We have prioritised a program of dam upgrades in a staged approach to give us time to scope, design and plan, while maintaining public safety, security of water supply and delivering best value for money.

Wappa Dam upgrade

The dam was raised in 1983 and received a spillway upgrade in 2001. The most recent upgrade started in late September 2016 and was completed mid-July 2017.

The project involved modifications to the embankment and spillway, as well as the installation of new filter drains. The dam remained operational during the upgrade.

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Wappa Dam was upgraded in 2001 and in 2017